reworked freeing pdf document resources

13 years ago · ac010ea325
parent 7e04b9a797
commit ac010ea325
1 changed files with 8 additions and 2 deletions
--- a/pdf.c
+++ b/pdf.c
@ -70,8 +70,14 @@ static int openDocument(lua_State *L) {

 static int closeDocument(lua_State *L) {
 	PdfDocument *doc = (PdfDocument*) luaL_checkudata(L, 1, "pdfdocument");
-	fz_free_glyph_cache(doc->glyphcache);
-	pdf_free_xref(doc->xref);
+	if(doc->xref != NULL) {
+		pdf_free_xref(doc->xref);
+		doc->xref = NULL;
+	}
+	if(doc->glyphcache != NULL) {
+		fz_free_glyph_cache(doc->glyphcache);
+		doc->glyphcache = NULL;
+	}
 }

 static int getNumberOfPages(lua_State *L) {